Critical Preferences

In Critical Rationalism, we do not justify ideas with positive support; we eliminate them by criticism. But when several rival ideas all survive criticism, CR still needs a way to choose. Popper’s answer is the critical preference: prefer the theory that has been most vigorously tested and best withstood attempts at refutation. The preference is formed by weighing the negative arguments — how severely each idea was tested and how well it came through (its corroboration) — and then judging which non-refuted rival comes out best overall.

CF singles out this concept as the main place where it breaks from CR. Elliot Temple argues that critical preference smuggles back the very thing CR rejected. Because it ranks surviving ideas by how good they seem, it treats criticisms as having degrees of strength and effectively sums them — what CF calls degree arguments. Temple notes this makes CR’s procedure structurally like the justificationist “standard view” it claims to oppose: both take a weighted balance of arguments before picking a winner, differing only over whether positive arguments count.

CF replaces critical preference with a binary test. An idea is judged only as refuted or non-refuted relative to a goal: a decisive criticism says it will fail. We discard decisively refuted ideas and act on a non-refuted one, never scoring survivors against each other. See Yes or No Philosophy and gradations of certainty for the fuller critique.